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(ICAO) A Non-directional radio beacon. A low or medium frequency radio beacon which transmits signals whereby the pilot of an aircraft properly equipped can determine bearings and 'home in' on the station.
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Attributes
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CODE_ID
[Identification]
mandatory
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The coded identification of the NDB.
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Rules:
- If CODE_CLASS = 'B' [en-route NDB], then CODE_ID shall not be duplicated within 600 NM of the location of the NDB..
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Domain:
CODE_ID_NAV_AID
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GEO_LAT
[Latitude]
mandatory
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The latitude of the position of the NDB.
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Domain:
GEO_LAT
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GEO_LONG
[Longitude]
mandatory
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The longitude of the position of the NDB.
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Domain:
GEO_LONG
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TXT_NAME
[Name]
optional
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The full textual name of the radio navigation aid.
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Domain:
TXT_NAME
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VAL_FREQ
[Frequency]
mandatory
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The frequency of the NDB emission.
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Rules:
- The value of the VAL_FREQ must be in the interval 190 to 1750 kHz. (see ICAO Annex 10, Vol. 1, section 3.4.4.1).
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Domain:
VAL_FREQ
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UOM_FREQ
[Unit of measurement [frequency]]
mandatory
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The unit of measurement of the Non-Directional Beacon emission frequency.
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Domain:
UOM_FREQ
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CODE_CLASS
[Classification]
optional
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The class of the NDB. For example, NDB or Locator.
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Domain:
CODE_CLASS_NDB
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CODE_PSN_ILS
[Position]
optional
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A code indicating the position in a real or virtual ILS for Locators (low powered NDBs) situated at an aerodrome. For example, LO = Locator outer, LM = Locator middle.
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Rules:
- The value 'I' (inner marker position) is not allowed for NDB (CODE_CLASS = 'B').
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Domain:
CODE_PSN_ILS
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VAL_MAG_VAR
[Magnetic Variation]
optional
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The local angular difference between the True North and the Magnetic North.
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Domain:
VAL_ANGLE_MAG_VAR
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DATE_MAG_VAR
[Magnetic variation date]
optional
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The year when the magnetic variation was measured.
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Domain:
DATE_YEAR
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CODE_EM
[Emission]
optional
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A code indicating the type of emission, as defined at the 1979 ITU World Administrative Radio Conference. For example, A3E, NONA2a, G1D, etc..
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Domain:
CODE_EM_RDO
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CODE_DATUM
[Datum]
mandatory
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A code indicating the geodetic datum in which the geographical co-ordinates are expressed.
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Rules:
- All geographical coordinates should be expressed in the WGS 84 system.
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Domain:
CODE_DATUM
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VAL_GEO_ACCURACY
[Geographical accuracy]
optional
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The horizontal distance from the stated geographical position within which there is a defined confidence of the true position falling.
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Rules:
- If VAL_GEO_ACCURACY is specified, then UOM_GEO_ACCURACY is mandatory.
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Domain:
VAL_DIST_HORZ
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UOM_GEO_ACCURACY
[Unit of measurement [geographical accuracy]]
optional
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The unit of measurement for the value expressing the accuracy of the geographical co-ordinates.
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Domain:
UOM_DIST_HORZ
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VAL_ELEV
[Elevation]
optional
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The vertical distance of the position from Mean Sea Level. The geoidal height of the position.
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Rules:
- If VAL_ELEV is specified, then UOM_DIST_VER is mandatory.
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Domain:
VAL_DIST_VER
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VAL_ELEV_ACCURACY
[Elevation accuracy]
optional
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The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
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Rules:
- VAL_ELEV_ACCURACY may be specified only if VAL_ELEV has been specified.
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Domain:
VAL_DIST_VER
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VAL_GEOID_UNDULATION
[Geoid undulation]
optional
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A distance separating the geoid and the ellipsoid at that position. In respect of WGS-84 geodetic datum, the difference between the WGS-84 ellipsoidal height and geoidal height represents geoidal undulation.
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Rules:
- VAL_GEOID_UNDULATION may be specified only if VAL_ELEV has been specified.
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Domain:
VAL_DIST_VER
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UOM_DIST_VER
[Unit of measurement [vertical distance]]
optional
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The unit of measurement for vertical distances: elevation, geoidal undulation.
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Domain:
UOM_ELEV
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VAL_CRC
[Cyclic redundancy check]
optional
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Hexadecimal value of a 32-bit polynominal cyclic redundancy check (CRC) over the values of a selected set of attributes that model critical, essential and routine data, according to ICAO Annex 15, item 3.2.10.
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Notes:
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Applications implementing the model shall decide and notify the specific attributes which are used for the CRC calculations, taking into consideration the requirements of the ICAO Annex 15.
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Domain:
VAL_HEX
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TXT_VER_DATUM
[Vertical Datum]
optional
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Attribute to take the "Vertical Datum" (viz. the tide gauge to determine MSL - for example, "AMSTERDAM GAUGE", "NEWLYN" etc.).
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Domain:
TXT_DESCR
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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All limitations of the same type (such as, coverage, usability, out of tolerance, etc.) of an NDB, described using circular sector volumes.
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Attributes
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CODE_TYPE
[Limitation type]
mandatory
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A code indicating the type of radio navigation aid limitation.
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Rules:
- If CODE_TYPE='CVR' ('coverage'), then VAL_DIST_OUTER is mandatory.
- If CODE_TYPE='SCL' ('scalloping'), then VAL_ANGLE_SCALLOP is mandatory.
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Domain:
CODE_TYPE_NAV_AID_LIMIT
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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NITROGEN supplies in aviation.
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Attributes
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CODE_TYPE
[Type]
optional
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The type of nitrogen supplies for aviation usage.
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Domain:
CODE_TYPE_NITROGEN
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TXT_RMK
[Remarks]
optional
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Remarks with regard to the nitrogen supplies.
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Domain:
TXT_RMK
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(ICAO) All fixed objects whether temporary or permanent, or parts thereof, that are located on an area intended for the surface movement of aircraft or that extend above a defined surface intended to protect aircraft in flight.
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Attributes
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TXT_NAME
[Name]
optional
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The textual name or location of an obstacle.
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Domain:
TXT_NAME
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TXT_DESCR_TYPE
[Type]
mandatory
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A full textual description of the type of obstacle. For example, mast, chimney, antenna, etc. .
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Domain:
TXT_DESCR
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CODE_GROUP
[Group of obstacles]
mandatory
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A code indicating that the obstacle consists of a group of obstacles of the same type. For example, a group of trees, a group of buildings, a group of antennas, etc..
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Domain:
CODE_YES_NO
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GEO_LAT
[Latitude]
mandatory
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The latitude of the position of the obstacle.
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Domain:
GEO_LAT
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GEO_LONG
[Longitude]
mandatory
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The longitude of the position of the obstacle.
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Domain:
GEO_LONG
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CODE_LGT
[Lighted]
mandatory
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A code indicating that the obstacle is lighted.
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Rules:
- If CODE_LGT ='Yes', then TXT_DESCR_LGT is mandatory.
- If CODE_LGT ='No', then TXT_DESCR_LGT cannot be specified.
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Domain:
CODE_YES_NO
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TXT_DESCR_LGT
[Type and colour of lighting]
optional
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A textual description of the type and colour of lighting for an obstacle.
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Domain:
TXT_DESCR
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TXT_DESCR_MARKING
[Visual marking]
optional
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A textual description of the visual markings for an obstacle.
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Domain:
TXT_DESCR
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CODE_DATUM
[Datum]
mandatory
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A code indicating the geodetic datum in which the geographical co-ordinates are expressed.
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Rules:
- All geographical coordinates should be expressed in the WGS 84 system.
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Domain:
CODE_DATUM
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VAL_GEO_ACCURACY
[Geographical accuracy]
optional
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The horizontal distance from the stated geographical position within which there is a defined confidence of the true position falling.
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Rules:
- If VAL_GEO_ACCURACY is specified, then UOM_GEO_ACCURACY is mandatory.
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Domain:
VAL_DIST_HORZ
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UOM_GEO_ACCURACY
[Unit of measurement [geographical accuracy]]
optional
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The unit of measurement for the value expressing the accuracy of the geographical co-ordinates.
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Domain:
UOM_DIST_HORZ
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VAL_ELEV
[Elevation]
mandatory
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The vertical distance of the position from Mean Sea Level, measured at the top of the obstacle. The geoidal height of the position.
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Domain:
VAL_DIST_VER
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VAL_ELEV_ACCURACY
[Elevation accuracy]
optional
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The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
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Domain:
VAL_DIST_VER
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VAL_HGT
[Height]
optional
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The value of the height of the obstacle above the ground surface.
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Notes:
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This attribute is likely to be specified mainly for artificial obstacles, which have a narrow base and are relatively tall compared to the surface occupied on the ground.
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Domain:
VAL_DIST_VER
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VAL_GEOID_UNDULATION
[Geoid undulation]
optional
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A distance separating the geoid and the ellipsoid at that position. In respect of WGS-84 geodetic datum, the difference between the WGS-84 ellipsoidal height and geoidal height represents geoidal undulation.
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Domain:
VAL_DIST_VER
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UOM_DIST_VER
[Unit of measurement [vertical distance]]
mandatory
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The unit of measurement for vertical distances: elevation, geoidal undulation.
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Domain:
UOM_ELEV
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VAL_CRC
[Cyclic redundancy check]
optional
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Hexadecimal value of a 32-bit polynominal cyclic redundancy check (CRC) over the values of a selected set of attributes that model critical, essential and routine data, according to ICAO Annex 15, item 3.2.10.
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Notes:
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Applications implementing the model shall decide and notify the specific attributes which are used for the CRC calculations, taking into consideration the requirements of the ICAO Annex 15.
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Domain:
VAL_HEX
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TXT_VER_DATUM
[Vertical Datum]
optional
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Attribute to take the "Vertical Datum" (viz. the tide gauge to determine MSL - for example, "AMSTERDAM GAUGE", "NEWLYN" etc.).
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Domain:
TXT_DESCR
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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(ICAO) The lowest altitude or height above the elevation of the relevant runway threshold or aerodrome elevation as applicable, used in establishing compliance with appropriate obstacle clearance criteria.
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Rules:
- At least one of the two values VAL_OCA or VAL_OCH must be specified.
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Attributes
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CODE_CAT_ACFT
[Aircraft category]
mandatory
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A coded classification of aircraft based on 1.3 times stall speed in landing configuration at maximum certified landing mass. The default aircraft within these categories are considered to have a 2.5% climbing gradient capability. Additional allowable values for this attribute are given for aircraft with other climb capabilities.
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Domain:
CODE_CAT_ACFT
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CODE_TYPE_APCH
[Type of the approach procedure]
mandatory
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A code indicating the type of the approach procedure. For example, straight-in, circling, straight-in CAT I, etc..
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Domain:
CODE_TYPE_APCH_PROC
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VAL_OCA
[OCA]
optional
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The value of the obstacle clearance altitude.
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Rules:
- If VAL_OCA is specified, than UOM_DIST_VER is mandatory.
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Domain:
VAL_DIST_VER
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VAL_OCH
[OCH]
optional
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The value of the obstacle clearance height.
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Rules:
- If VAL_OCH is specified, then CODE_REF_OCH is mandatory.
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Domain:
VAL_DIST_VER
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CODE_REF_OCH
[Reference for OCH]
optional
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The reference position for the obstacle clearance height(altitude).
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Notes:
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Obstacle clearance altitude is referenced to mean sea level and obstacle clearance height is referenced to the threshold elevation and in the case of non-precision approaches, to the aerodrome elevation or the threshold elevation if it is more than 2 m (7 ft) below the aerodrome elevation. An OCH for a circling approach is referenced to the aerodrome elevation.
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Domain:
CODE_REF_OCH
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UOM_DIST_VER
[Unit of measurement [vertical distance]]
optional
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The unit of measurement for the obstacle clearance altitude/height.
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Domain:
UOM_ELEV
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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Oil types used for aircraft/helicopters.
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Attributes
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CODE_CAT
[Category]
mandatory
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A code indicating the category of oil available at an aerodrome/heliport.
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Domain:
CODE_CAT_OIL
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TXT_DESCR
[Description]
optional
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A textual description of the oil available.
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Domain:
TXT_DESCR
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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An entity used to model various Organisations and Authorities. For example: ATS Organisations, Aircraft Operating Agencies, States, Groups of States, etc.
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Rules:
- For every organisation/authority having CODE_TYPE = 'O', 'IO', 'AOA', 'HA', 'A' or 'ATS', there must be at least one postal address and one telephone number defined.
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Attributes
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TXT_NAME
[Name]
mandatory
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The full official name of the State, Organisaton, Authority, aircraft operating agency, handling agency etc. expressed in the Latin alphabet.
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Domain:
TXT_NAME
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CODE_ID
[Identification]
optional
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A code associated with the State/Organisation of States, (E.g. BE = Belgium, FR = France, UK = United Kingdom, ICAO = International Civil Aviation Organisation, etc..), authority or agency.
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Domain:
CODE_ID_ORG
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CODE_TYPE
[Type]
mandatory
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A code indicating the type of an Organisation/Authority. E.g.: State, Association of States, International Organisation, etc..
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Domain:
CODE_TYPE_ORG
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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This entity type serves to realise the different 'two-way associations' (Bill of Material, explosion-implosion) which may exist between 'organisations/authorities' of the same and/or different types. These associations could easily be represented as many-to-many relationships. Since there are, however, quite a number of 'operations' according to which the organisations/authorities concerned may be associated, this entity must take attributes necessary to control these operations.
Examples: a) an organisation/authority/agency may consist of any number of other organisations/authorities/agencies; b) an organisation/authority/agency may be contained within any number of other organisations/authorities/agencies; c) an organisation/authority/agency may be the liaison between any number of other organisations/authorities/agencies; d) an organisation/authority/agency may consist of any combination of the foregoing
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Attributes
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CODE_TYPE
[Type]
mandatory
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The type of association between two ORGANISATION/AUTHORITY occurrences.
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Domain:
CODE_TYPE_ASSOC_ORG
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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Oxygen supplies used in aviation.
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Attributes
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CODE_TYPE
[Type]
mandatory
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The type of oxygen supplies for aviation usage.
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Domain:
CODE_TYPE_OXYGEN
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TXT_RMK
[Remarks]
optional
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Remarks with regard to the oxygen supplies.
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Domain:
TXT_RMK
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Passenger facilities available at an aerodrome/heliport (like medical facilities) or in the surrounding area (hotels in city etc.).
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Attributes
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CODE_TYPE
[Type]
mandatory
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A code indicating the type of passenger facility available. For example, hotel, restaurant, transportation, medical service, etc.
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Domain:
CODE_TYPE_PAX_FAC
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NO_SEQ
[Sequence number]
mandatory
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A sequence number used to distinguish between many occurrences of the same type.
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Domain:
NO_SEQ
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TXT_DESCR
[Description]
optional
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A textual description of the passenger facility: For example, airport buses every half hour, bank in the city, etc..
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Domain:
TXT_DESCR
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TXT_RMK
[Remark]
optional
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Domain:
TXT_RMK
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